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https://github.com/RGBCube/serenity
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Kernel: Make all syscall functions return KResultOr<T>
This makes it a lot easier to return errors since we no longer have to worry about negating EFOO errors and can just return them flat.
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9af1e1a3bf
commit
ac71775de5
70 changed files with 747 additions and 742 deletions
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@ -31,7 +31,7 @@
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namespace Kernel {
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int Process::sys$chdir(Userspace<const char*> user_path, size_t path_length)
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KResultOr<int> Process::sys$chdir(Userspace<const char*> user_path, size_t path_length)
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{
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REQUIRE_PROMISE(rpath);
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auto path = get_syscall_path_argument(user_path, path_length);
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@ -44,24 +44,24 @@ int Process::sys$chdir(Userspace<const char*> user_path, size_t path_length)
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return 0;
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}
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int Process::sys$fchdir(int fd)
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KResultOr<int> Process::sys$fchdir(int fd)
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{
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REQUIRE_PROMISE(stdio);
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auto description = file_description(fd);
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if (!description)
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return -EBADF;
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return EBADF;
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if (!description->is_directory())
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return -ENOTDIR;
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return ENOTDIR;
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if (!description->metadata().may_execute(*this))
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return -EACCES;
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return EACCES;
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m_cwd = description->custody();
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return 0;
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}
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int Process::sys$getcwd(Userspace<char*> buffer, size_t size)
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KResultOr<int> Process::sys$getcwd(Userspace<char*> buffer, size_t size)
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{
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REQUIRE_PROMISE(rpath);
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@ -70,7 +70,7 @@ int Process::sys$getcwd(Userspace<char*> buffer, size_t size)
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size_t ideal_size = path.length() + 1;
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auto size_to_copy = min(ideal_size, size);
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if (!copy_to_user(buffer, path.characters(), size_to_copy))
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return -EFAULT;
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return EFAULT;
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// Note: we return the whole size here, not the copied size.
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return ideal_size;
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}
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